1. We had a more deep discovery and great update on our DDQ series woofers. Currently DDQ4.5-2 has replaced
the old DDQ4.5-4 and DDQ6.5-2 has replaced DDQ6.5-4. The update of DDQ4.5-2 has finished on our website. The
most progress on DDQ is that it has deeper frequency limit and much more flat response.

2. We added a new products line -- the BZ series Cabinets! Currently we have two models: BZ-1 and BZ-2. BZ-1
is a bookshelf cabinet mounted with CQ76 and DDQ4.5-2, BZ-2 is a floor-stand cabinet mounted with CQ76 and
DDQ6.5-2. The information for them was updated on the website.

3. We will add a third model: BZ-3 very soon. This is a bookshelf cabinet mounted with CQ66 and DDQ4.5-2. It
was designed for SACD.

2017 Mar

1. DDQ6.5-2 and DDQ8-2 have replaced DDQ6.5-4 and DDQ8-4 respectively. The most progress is that they have
much more flat response and lower frequency limit. In the meanwhile their size becomes even smaller! Their SPL
and IMP curves have been updated on the website.

2017 June

1. The DDQ series has some structure updates and becomes more flat in response.

2. DDQ6.5-2 was remodel as DDQ6-2 and DDQ4.5-2 was remodeled as DDQ5-2.

3. Comparision between DDQ and Traditional Woofer was updated.

2018 January

1. New model 'CQ76B' was complele. Its major internal structures have been re-designed and optimized. It could work reliably from 1000Hz to near 30000Hz, it could be crossed at 1000Hz to match with larger woofer.